Display panel or portion thereof of an electronic navigation device with a computer generated icon



FIG. 1 presents a front view of a display panel or portion thereof of an electronic navigation device with a computer generated icon showing a first embodiment of the claimed design; and,

FIG. 2 presents a second embodiment thereof.

The broken line showing of the display panel or portion thereof in FIGS. 1-2 are included for the purpose of illustrating portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a display panel or portion thereof of an electronic navigation device with a computer generated icon, as shown and described. 